Tennis Players' Grunts May Slow Opponents' Reactions: Scientific American Podcast. A recent study shows the negative impact that noise can have when one is attempting to predict where a tennis ball will land.
Duh! Kiai effects people and animals.
Danzan Ryu Jujitsu, Isshinryu Karate, Qigong, Seifukujitsu and other Wisdom
Tennis Players' Grunts May Slow Opponents' Reactions: Scientific American Podcast. A recent study shows the negative impact that noise can have when one is attempting to predict where a tennis ball will land.
Duh! Kiai effects people and animals.
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